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ISBN Lookup and ISBN Search

Wikireadia.org is a free ISBN lookup site. Use the ISBN search options for finding books by ISBN, title, author, and publisher. Amazon book reviews, Amazon pricing, Amazon product description, Amazon ASIN number, and links to Amazon editorial reviews, and Amazon customer reviews are also displayed. Use the Amazon data to find and compare prices on new books, used books, new college textbooks, and used college textbooks. All sorts of books are listed on the site - new books, used books, new and used textbooks, new and used college textbooks, discountinued books, discounted books, out of print books, rare books, cheap books, children's books, young adults books, adult books, antique books, hard to find books, and old books.

Over 6 million ISBNs and ISBN barcodes are listed. The ISBN format was created by the International Organization for Standardization (ISO). ISBNs are 10 or 13 digit numbers that uniquely identify a book by its title, publisher, and format. ISBN bar codes are just a bar code display of the ISBN number. ISBNs were introduced in 1970 and were originally 10 digit numbers. In 2007, ISBN numbers changed to 13 digit numbers so the system wouldn't run out of ISBN numbers to assign. The ISBN number is typically found on the back cover of the book along with the ISBN barcode that represents that number. The ISBN number can also typically be found on one of the first few pages of the book where the publisher and copyright information is listed.

Each edition of a book and each format of a book has a different ISBN number. This is very useful when searching for the softcover edition or the hardcover edition of a book. It is also useful for college students searching for the correct edition of a college textbook for their university class.